JPS58139026A - Measuring method of plural kinds of mixed and combined articles - Google Patents

Abstract

PURPOSE:To make it possible to measure the plural kinds of the mixed and combined articles, by correcting the subsequent measured values of the plural kinds of the remaining articles, based on the preceeding measurements of parts of the plural kinds of the articles, computing the interlinking combination of the subsequently measured values, thereby determining the measured value of each of the mixed articles. CONSTITUTION:Two articles A and B of six kinds of articles are measured by the combination of five measuring parts. The preceeding measured values for 30 units CA1, CA2..., CB1, CB2... are determined. The measured values CA3, CB2... which are closest to the preset values are selected and subtracted from the preset mixed values. The result is distributed in accordance with the preset values. The subsequent measured values for kinds C-F are likewise corrected. Six measured values for the kinds C-D, which are closest to the computed values, are selected, interlinked, and combined. Then 1,296 measured values are obtained. The preceeding values are added to them. Then the measured weights for the kinds A-F are computed from the interlinked combinations which are equal to the preset mixed values. The measured numbers are obtained by the same way. Thus the plural kinds of mixed and combined measurements can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention uses a plurality of combination weighing devices corresponding to a plurality of types of products, divides the product into n weighing machines, and calculates the product based on the preset mixed weight value of the mixture. The weight value of the type of item that has already been weighed is subtracted, and the subtracted value is distributed according to the size of the set weight value of the number type item that will be weighed from now on, and each set weight value is corrected. A plurality of combinations of divided weight values that are closest to each set weight value are extracted, and the extracted combinations are connected between several types of items to perform a chain combination calculation, and the set mixed weight value is selected from among the chain combinations. By selecting a chain combination that takes a value close to , we can obtain the weight values of each of the above several types of items, and by combining these weight values with the weight values of the types of items that have already been weighed, we can obtain a predetermined mixture. The present invention relates to a mixing and combining method for weighing a plurality of types of products in a composition ratio and a set mixed weight or a set mixed number.

■When weighing objects with high weighing and counting accuracy,
Perform combined weighing.

In combination weighing, when trying to obtain an item with a set weight value,
A product is weighed in small portions with variations using n weighing machines, and a combination calculation is performed on the combination of each divided weight value or the combination of each divided number of pieces obtained by dividing each divided weight value by the unit weight value of the item. By doing so, a combination suitable for the set weighing value is selected, and the items are discharged from the weighing machine of that combination to obtain the items to the set weight value or set number of pieces.

The above-mentioned combination weighing targets a single type of item or a mixture of multiple types of items mixed in advance at a predetermined ratio, and these items can be weighed with high accuracy. However, it is impossible to obtain a mixture consisting of a plurality of types of articles in a predetermined composition ratio and with a predetermined mixing weight or a predetermined number of items.

Therefore, the present invention provides a plurality of combination weighing devices corresponding to a plurality of types of items, and divides the plurality of types of items into a pre-weighing item and a post-weighing item consisting of several types of items, and each combination weighing device First, obtain a measurement value that matches the set measurement value set individually for the first object to be weighed, then store the combination of each divided measurement value for the second object to be weighed, and First, select a combination that matches the set weight values set in Accordingly, the set weight values are corrected, and the combinations that are closest to the corrected set weight values are extracted from among the above-mentioned memorized combinations, and the extracted multiple combinations are are chained between each type of item to perform a combination operation, each chain combination is memorized, and then each chain combination is combined with the weight value of the item to be weighed earlier in the first selected combination above to calculate the value of the mixture. By selecting the combination that has the closest value to the set weighing value and obtaining the weighing values of each of the several types of items that make up the weighed object, the mixture can be prepared at a predetermined composition ratio and a set mixed weight, or the set number of mixed items. Embodiments of the present invention will be described below with reference to the drawings using the measuring method obtained in the following.

FIG. 1 shows a schematic diagram of a mixing and combination metering device for specifically explaining the present invention. From the figure, the mixing combination weighing device can handle multiple types of items (A, B, C, D, E, F in the example).
A plurality of combination weighing devices (a), (b), (C), (d), (e), (f
), and each type of item A, B is placed on each combination weighing device.
, C, D, E, F supply equipment (1), (2)
, (3), (4), (5), and (6), and a collecting and discharging device (7) that mixes the weighed items of each type and discharges them to a predetermined position. Furthermore, each combination weighing device (
a) ..., (f) are n scale weighing machines (a) ..., (b) ..., (
c)..., (d)..., (e)..., (f)...
・The feeding devices (1), ..., (6) are composed of feeding hoppers (a), .
..., (■) and their respective combination weighing devices (a), ...
(f) A large number of electromagnetic feeders (14) ..., ..., (
19) ..., and the collecting and discharging device (7) temporarily stores the mixture input from the collecting hopper (20) provided below the weighing hopper of each weighing machine and the outlet of the collecting hopper (20), and the broadcasting device (not shown), and a timing hopper (21) for appropriately feeding the liquid into the container (not shown).In addition, in the illustrated device, each combination weighing device (a)

..., (f) are arranged in a ring, but these may be stored facing each other in multiple rows, or they may be arranged in one row, and a supply device and a collecting and discharging device may be attached accordingly. Next, the weighing method of the present invention will be explained using the mixing and combination weighing device having the above configuration.

Before this, we will define counting and measuring as counting the number of items and measuring weight, and since the measurement value is the measurement value divided by the unit weight of the item, we will explain counting and measurement together. Let's now consider each combination weighing device (a)...
・, (f) will be composed of 5 weighing machines each, and the mixture will be composed of 6 types of items A, B, C, D, E, and F, and each type of item A will be ,B,C,D,E,
Weighing machines for each of the 5 units corresponding to F (a)..., (b)...
..., (c)..., (d)..., (e)..., (
f) A case will be described in which the mixture is supplied to each weighing hopper via each pool hopper with variation and is weighed separately, and the mixture is taken out at a set composition ratio and a set mixing amount value.

In this case, multiple types of items constituting the mixture are given priority over others and combination operations are performed independently.For example, a pre-weighed item consisting of items A and B, and a pre-weighed item. The post-weighing items are divided into several types of items for which combined subtraction is performed depending on the calculation result of , i.e., items C, D, E, and F. First, each division calculation value is calculated for item A, which is the pre-weighing item. Then, all the combinations of divided weight values are stored, and from among them, a combination matching the set weight value of item A set individually and its weight value are obtained. Similarly, for item B, a combination of divided weight values and its weight value matching the independently set value are obtained.

Next, a combination calculation of the post-weighed items is performed, but first, the respective types of items C and D are calculated in the same manner as the items A and B of the pre-weighed items.
, E, and F, and select a combination that matches the individually set weight values of items C, D, E, and F, and select each combination. These are stored in series as a set of chained combinations.

The above combination calculations are performed using the respective combination weighing devices (a),
..., (f) is separated and becomes the corresponding type of item A.
,..., is the same as the combinatorial operation when weighing F into a single number, and in this case, the total number of combinations of divided weight values of 5 weighing machines that divide and weigh a single type of item is 31. Generally speaking, for six types of items, the number is 31×6=186, which is insufficient to improve the measurement accuracy of mixtures.

Therefore, in the present invention, the following calculations are further performed for the post-weighed object. After the above-mentioned combination calculation, first, the value obtained by subtracting the calculated value of each of the pre-weighed items A and B from the set mixed weight value of the mixture is calculated for each of the items C, D, E, and F that make up the post-weighed item. It is distributed in proportion to the magnitude of the set weight value and corrects each set weight value.

In other words, the set weight value of item C is the same as the set weight value of item C.
, D, E, and F, and the above-mentioned subtracted values are distributed and corrected according to their proportions in the total value of the set measurement values. Similarly, the set weighing positions of items D, E, and F are corrected depending on the weighing results of the previous weighing items.

Then, from among all the combinations of stored divided quantity values for items C, D, E, and F to be weighed, the combination closest to each corrected set weight value is extracted to multiple sets, for example, to 6 sets. death,
The extracted combinations addressed to the 6 groups are assigned to each type of item C, D, and E.
, F, take out one set and connect four sets to perform a chain combination calculation, and calculate all chain combinations and the measured values of the chain combinations (the total value of the measured values obtained from the combination of the four divided measured values).
Remember. The total number of chain combinations obtained by this is 6 x 6 x 6 x 6 mm / 1296 ways for 4 types of items,
This is sufficient to obtain a mixture with high metering accuracy.

Next, from among the 1296 chain combinations and a set of chain combinations that are a series of combinations of divided weight values that match the set weight values of the items C, D, E, and F before correction,
Select one set of chain combinations that, together with the weight value of the husband of the first weighed object, has the value that is the most equal to the mixing setting measurement value of the mixture, and then Obtain the weighing values for each of items C, D, E, and F.

Items C, D, E, F to be weighed after the above calculations
The respective weighing values are the proportion of previously weighed items A and B in the mixture.
In addition to absorbing the measurement error of these items A, B, C
, D, E, and F satisfy the set mixture measurement value of the mixture, and the respective types of items A, B, C, D,
The measured values of E and F satisfy the set composition ratio of the mixture. Next, the above-mentioned measuring method will be explained with specific numerical values as follows.

Now, among the set mixing measurement values of the mixture, set the mixing mass value W
, the set mixed number is represented by N, and the set weighing values of each type of item A, B, C, D, E, F constituting the mixture are set as the set weight value and set number, and the weighing value is expressed as the weighing weight value. and the number of items to be measured, and represent each item with the symbol of the type of item. In other words, the set weight value of the item of the husband's type is WA...WF〃〃〃The set number of items is NA...NF〃〃〃Weighed weight value are expressed as WA'...WF' and the number of pieces to be measured is expressed as NA'...NF'.

In order to simplify the explanation, the set weight values WA...WF and the set numbers NA...NF of the respective types of items are set equally.

In the above, FIG. 2 shows a block diagram for performing this measurement. In the figure, (22) is the aforementioned arithmetic and control unit composed of a microcomputer, etc., which controls the respective combination weighing devices (a), (b), (c), (d), (e), and (f).
) each weighing machine (a)..., (b)..., (c)...
. . , (d) . . . , (e) . . . (f) . (23) is a multiplexer composed of analog switches, etc.; (24)
) is an A/D converter.

(26) and (27) are a mixing weight setting section and a mixing number setting section for setting a set measurement value of the mixture, that is, a set mixing weight value W and a set number N of mixed pieces. (27), (28), (
29), (30), (31), and (32) are the set weight values WA, WB, WC, WD, WE, and WF for each type of item.
Weight setting section for setting (33), (34), (35)
, (36), (37), and (38) are unit quantity setting units for setting the average unit weight of each type of item, (39), and (40).
), (41), (42), (43), and (44) are the set numbers of items of each type NA, NB, NC, ND, NE,
This is the quantity setting section that sets the NF. With the above configuration, each type of item A, B, C, D, E, F
is stored in the supply hoppers (8), ... (12), and is fed to a large number of electromagnetic feeders (14) ..., (18).
Combination weighing devices (a), (b), corresponding to ...
Each weighing machine (c), (d), (e), (f) (a)...
・, (b)..., (e)..., (d)..., (e
)..., (f)... are fed into each weighing hopper via each boule hopper with small amounts of unevenness, and when the preparation for packaging is completed, a start signal (B) is sent.
) is sent to the calculation control unit (22).・The calculation control unit (2
2) receives the start signal (B), sends the selection signal (A) to the multiplexer (23), and first weighs each type of item in order from item A (a) to 5 weighing machines (a)...
. . . , (f) ..., each divided weight value (analog signal) is selected sequentially and each divided weight value is sent to the multiplexer (2
3), the A/D converter (24) converts it into a digital signal and reads it, and each weighing machine (a), ..., (f), in the arithmetic control section (23) . . . and at the same time, the number of items obtained by dividing each divided weight value by the unit weight of each type of item is stored.

Here, the case where a mixture is taken out at the set mixed weight W (■) with emphasis on the component weight of each type of item, that is, each set weight value WA, ..., WF, and the number of components of each type of item , that is, the case where a mixture with emphasis on the set number NA, .

First, in the case of (■) above, the calculation control unit (22) performs a combination calculation for the items A and B to be weighed first, and then for the items C, D, and
This is done with priority over E and F, and all combinations (31 each) of the divided weight values are memorized, and among those combinations, as shown in Fig. 3, the set amount weight values WA and WB are equal. or the closest (combined) combination CA3, C to each
B5 is selected and measured quantity values WA' and WB' corresponding to this combination CA3 and CB5 are obtained.

Next, perform the combination calculation for the items C, D, E, and F to be weighed afterward in the same way as for items A and B to be weighed first, memorize all the combinations of the divided quantity values (31 combinations each), and The set weight values WC, WD, WE as shown in Fig. 3 among the combinations of
, WF-compatible combinations CC1, CD7, CE2, CF
3 and connect them to form a chain combination CC1-
Store it as CD7-CE2-CF3. Then, after the above combination calculation, from now on, the determined weighing weight values WA' and WB' of the items A and B in the previous weighing proboscis are subtracted from the set mixing weight value W of the mixture. The remaining values are distributed in proportion to the respective set weight values WC, WD, WE, and WF to correct the respective set weight values.

Since the respective set weight values are all equal, item C,
The set weight values of D, E, and F after correction are also equal, and each of them is WCR=WDR=WER=WFR=1/4{W-(WA
'+WB')
Combination of divided calculation values stored by F CC1...CC3
1, CD1...CD31, CE1...CE31, C
F1... From CF31, set weight value WC after correction
The combinations closest to R, WDR, WER, and WFR are extracted for 6 sets. Then, the extracted combinations shown in FIG. 3, for example CC1...CC6, CD1...CD6, CD1...
・CE6, CF1... Extract one set of CF6 and perform chain combination operation, total number 6 x 6 x 6 x 6 = 129
Stores six chain combinations and the metric values of the chain combinations (the total value of the metric values obtained from the combinations of the four divided metrics values).

Next, the arithmetic control unit (22) selects the most suitable combination of the 1296 chain combinations and the above-mentioned set of chain combinations to the set mixed weight value W of the mixture by combining the weighed weight values WA and WB of the previously weighed objects. One set of chain combinations that have similar measured weight values,
For example, select CC1-CD2-CE3-CF4, and select the combination CC of each split measurement value that constitutes this chain combination.
1. Items C and D to be weighed after CD2, CE3, and CF4
, E, F, respectively, measured weight values WC', WD', WE',
Obtain WF'.

As a result of the above calculation, the calculation control unit (22) calculates the combinations CA3 and CB of the selected divided weight values of the items A and B to be weighed previously.
5, and the combinations CC1 and C of respective divided weight values constituting the selected chain combination of items C, D, E, and F to be weighed after weighing.
Each measurement value (a) corresponding to D2, CE3, CF4...
, (b)..., (c)...(d)..., (e)...
..., (f)... sends the discharge signal (w) to the weighing hopper, and the weighed weights are WA', WB', WC', WD',
Items A, B, C, D, E, and F of WE' are placed in the collection hopper (
20).

Through the above measurements, multiple types of items A, B, C, D,
A mixture composed of E and F can be taken out at a set component weight ratio, that is, a set amount value WA, WB, WC, WDWE, WF, and a set mixture amount value W.Next, the composition of each type of item Number ratio, i.e. set number NA
, NB, NC, ND, and NF are taken out in a set number N of mixtures (■). The measuring method will be specifically explained.

In this case, each type of item A, B, C, D, E. Set weight value WA, WB, WC, WD, WE, WF of F, set number NA, NB, NC, ND, NE, NF and measured weight value WA', WB', WC', WD', WE', WF ' to N
Replace A', NB', NC', ND', NE', NF', and use the same method as in the case (■) above to measure the first weighing items A and B and the second weighing items C, D, and E. , F, multiple types of items A, B, C, D,
A mixture composed of E and F can be taken out at a set component number ratio, that is, a set number of pieces NA, NB, NC, ND, NE, NF, a set number of mixed pieces N, and a substantially set mixed weight value W.

However, in this case, the set numbers are NA and NB. N.C., N.D. N.E.
, NF and the set number after correction NCR, NDR, NEF,
Select a combination of the number of divisions equal to MFR, and select the most set weight value WA, WB, WC, WD, WE from among these.
, we will select a combination close to WF. If there is no combination with the number of divisions equal to each setting number and the setting number after correction, select a combination with the number of divisions that is one more than these, and The combination closest to the value obtained by adding the unit weight value to each set weight value is selected from among the above.

In the embodiment, the set weight value WA=WB=WC=WD=W
E=WF, set number NA=NB=NC=ND=NE=N
F, and therefore the unit weight of each type of item is the same. However, even if the unit weight of each type of item is different, and the set weight value and number of items are different, the set weight of each type is different. By correcting the values and the set number of pieces and performing the distribution described above according to the difference, it is possible to take out the mixture at an arbitrary constituent weight ratio or constituent number ratio, and also at a set mixed weight or set mixed number. Although the pre-weighed items are made up of two types of items A and B, they can also be made up of one type or three or more types of items. Furthermore, the first weighing object is completely abolished, and therefore, without correcting the set weight values of each of the plurality of types of items that make up the second weighing object, a plurality of combinations of divided weight values that are closest to the set weight values can be obtained. A chain combination calculation is performed by consecutively extracting multiple combinations between each product type, and the chain combination closest to the set mixture weight value is selected to make the mixture at the set composition ratio and the set weight. It is also possible to retrieve it by value.

As explained above, the present invention provides a plurality of combination weighing devices corresponding to a plurality of types of items, and also divides the plurality of types of items into a pre-weighed item and a post-weighed item consisting of several types of items. A combination weighing device is used to weigh the object, firstly obtaining a measurement value that matches the set measurement value set individually for the first object to be weighed, then storing the combination of each divided measurement value for the second object to be weighed, and First select a combination that matches the set weighing value set individually from among them,
Furthermore, the value obtained by subtracting the measured value of the pre-measured object from the pre-set measured value of the mixture is distributed according to the size of the pre-set measured value of each post-measured object, and these pre-set measured values are corrected, and the above-mentioned memorization is performed. Among the combinations obtained, the combination closest to the corrected set weight value is extracted to multiple sets, and the extracted combinations are linked between each product type to perform a chain combination calculation, and each chain is The combinations are memorized, and then each chain combination and the first selected combination above are combined with the weight value of the previous weighing item to select the combination that is closest to the set optical weight value of the mixture, and the subsequent weighing item is selected. A mixed and combination weighing method for multiple types of items that obtains the weight values for each of the several types of items that make up the mixture, and a set component amount ratio or setting for a mixture made up of multiple types of items with a high measurement configuration. It can be taken out according to the composition number ratio and a set mixed weight or a set mixed number.

Furthermore, the number of combinations of divided measurement values is increased by connecting the extracted combinations of divided measurement values for multiple sets between each product type and performing continuous cropping calculations.
The number of weighing machines to be installed can be reduced.

[Brief explanation of the drawing]

1 to 3 are diagrams for explaining the weighing method of the present invention, and FIG. 1 shows a schematic diagram of a mixing and combination weighing device embodying the weighing method. Figure 2 shows a block diagram explaining the measurement method, and Figure 3 shows a diagram explaining the chain combination. (A), (B), (C), (D), (E), (F)・・・
Multiple types of items (a), (b), (c), (d),
(e), (f)...multiple combination weighing device, (a)...
..., (b)..., (c)..., (d)..., (
e)..., (f)...,... each weighing machine.

Claims (1)

[Claims] (1) Using a combination weighing device consisting of n weighing machines, each weighing machine divides and weighs the item in small amounts with variations, and performs a combination calculation on each divided weighing value to match the set weight value. In a combination weighing method in which a combination is selected and items are discharged from the weighing machines of that combination, multiple combination weighing devices are provided corresponding to multiple types of items, and multiple types of items are discharged from other weighing machines. The first weighing object is divided into the first weighing object, which consists of a single item or several kinds of objects, and the second weighing object consists of several kinds of objects, which are then subjected to the combination calculation, and the first weighing object is divided into two. performs a combination calculation of each divided weighing value, selects a combination of divided weighing values that matches the individually set set weighing weight, and obtains each weighing value, and then, for the item to be weighed after, A combination calculation of each divided measurement value is performed, each combination is memorized, and a combination of divided measurement values that matches the individually set measurement value is selected from among these combinations, and then the mixture is The value obtained by subtracting the measurement value of each of the preceding weighing items from the mixed measurement value of Among the stored combinations, combinations that are close to the corrected set weight values are extracted for multiple sets, and the extracted combinations are linked between each product type to perform a chain combination calculation. , each chain combination is memorized, and then each chain combination is combined with the respective weighing values of the pre-prepared heavy items of the above-mentioned first selected combinations to obtain the combination that is closest to the set mix weight value of the mixture. A mixed combination weighing method for a plurality of types of items, characterized in that the weight values of each item are obtained by selecting the items.